It is optimal to make a mental commitment to the AP exam early in the year (like September). A student can always change their mind, but it would be much easier to decide in March not to take the test, then to decide in March that you'd like to go for it, and have little time to prepare.
Among teachers nationally the following review books are recommended: 5 steps to a 5 AP Biology Please purchase this book by September 25th if you plan (even tentatively) to take the test.
The University of California hosts a Complete AP Biology course moodle. The "Media" sections for each chapter are very nerdy, but an excellent way to preview and review material.
Among teachers nationally the following review books are recommended:
An excellent collection of Biology Videos
The University of California hosts a Complete AP Biology course moodle. The "Media" sections for each chapter are very nerdy, but an excellent way to preview and review material.
Changes to the AP in 2012-2013
The College Board AP Biology Webpage
AP Essays
Previous AP essays with answers and analysis posted at the College Board Web site
Previous AP essays
Previous AP essays grading rubric----